The BTR Gen III & IV Truck Stage 2 NSR Camshaft is a hydraulic roller camshaft for GM LS-Series truck engines that does not require a valve spring upgrade (NSR stands for No Springs Required), making it a simpler install for trucks looking to delete DOD/AFM or add some extra pep while keeping OEM-like driving characteristics.
- Part Number: BTR-31218110NSR
- Application: GM LS-Series Truck (Gen III & IV)
- Camshaft Style: Hydraulic Roller
- Intake/Exhaust Lift: 0.481 in / 0.481 in
- Duration: 212/218
- Lobe Separation Angle: 111 LSA
- RPM Range: 2,300-6,300 RPM
No valve spring upgrade is required with this camshaft — it is designed to work with OEM valve springs.
FAQ
Does this camshaft require a valve spring upgrade?
No. This is the NSR (No Springs Required) version of BTR's Stage 2 truck camshaft, designed to work with OEM valve springs.
What vehicles is this camshaft designed for?
It is designed for GM LS-Series Gen III and Gen IV truck engines, including trucks looking to delete DOD/AFM.
Will this camshaft work with a stock torque converter?
Yes, this grind is designed to work well with stock torque converters while retaining OEM-like driving characteristics.
What is the lift and LSA on this camshaft?
It has 0.481 in of intake and exhaust lift with a 111-degree lobe separation angle.
